Abstract: Sealing system for package, created to avoid undesirable leakage and to enable to obtain a different and innovatively designed package, not effecting sealing performance, characterized by being constituted by a roll-on type package made of plastic material (1), being provided with a higher section (2) with semi-spherical shape (3) to internally couple the sphere (4), and a lower section (5) composing the body to hold the packed product, which form is at the manufacturer's discretion, and, in the internal part, between the two sections (2, 5), one or more circular shaped membranes (6) located in parallel on over the other, when required, are formed and exactly positioned jointly to the sphere (4), during the flask manufacturing process itself (be it by blow-molding, injection blow, blow+injection, blow+compression or injection), and both the flask and the circular membranes (6) may be made of one single material or different materials.

Abstract: To allow to increase the production capacity of conventional blow molding machines by using the space available within it, more specifically by using the available space in the direction of the nominal path of opening and closing the original distribution line for mold cavities of the blowing machine and through which it will be possible to increase the assembly in distribution lines for mold cavities, which will be located in parallel, in the direction of the nominal path of opening and closing the molds and, for that, the blowing mold as disclosed herewith incorporates an embodiment allowing joint displacement of equal side and intermediary halves composing mold cavities, so to neutralize the force tending to promote the opening of the halves of contiguous mold cavities, which is generated by the pneumatic pressure as introduced, by means of blowing pins, inside parisons which are located at the mold cavities, with no need to change the required compression force to keep closed the mold-bearing tables of th